boards.fm
P31003-H3550-S403-4-7620, 02/05
HiPath 3000 V5.0, HiPath 5000 V5.0, Service Manual
3-301
Boards for HiPath 3000
Peripheral Boards
S
2M
trunk connection
Table 2-10 lists examples of the maximum cable lengths for connecting trunks.
Observe the following when connecting NTs using the S30267-Z57-Axxx cable:
● Keep the cable from the NT to HiPath 3750 or HiPath 3700 as short as possible to ensure
proper operation.
● HiPath 3750 and HiPath 3700 must always be grounded (whether the line used by the net-
work provider is copper or optical fiber) (see 1 TR 211 item 2.4, Protective Measures and
Grounding). The diameter of the earth conductor must be at least 2.5 mm
2
. Grounding the
system using sheath wires is not sufficient.
For operating reasons, keep the ground connection from the NT to the system as short as
possible.
● Power supply
The NT must be fed over the –48 V (max. 10 W, observe the power requirements of the
NTs) of the UPSM (see Figure 3-123).
The voltage is fed out on backplane connector X06 (pins 17 + 37 = –48 V). Use the CABLU
supplied to connect the system with the MDFU. This places the voltage on pair no. 15 (= –
48 V) of the splitting strip.
The delivery does not include a CABLU if the REAL board has been ordered or is already
being used (the necessary CABLU is included in the delivery of the “ALUM using REAL”
feature).
Figure 3-122 S
2M
trunk connection
7
Caution
In order to guarantee successful operation, you must ensure that the NT is
grounded on the network provider side.
Cable S30267-Z57-Axxx
6 m (not Germany), 10 m and 20 m
HiPath 3750/HiPath 3700
TMS2
NT
Public network
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